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\begin{tabular}{l} Find Angle (Radians) given Reference/Quadrant \\ Score: \( 0 / 1 \quad \) Penalty: 1 oft \\ Question \\ Given the reference angle of \( \frac{3 \pi}{11} \), find the corresponding angle in Quadrant 3. \\ Answer Attempt 1 out of 2 \\ Show Examples \\ \hline Submit Answer \\ \hline\end{tabular}

Ask by Griffin Williams. in the United States
Feb 04,2025

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Answer

The angle in Quadrant 3 is \( \frac{14\pi}{11} \) radians.

Solution

To find the corresponding angle in **Quadrant 3** given a **reference angle** of \( \frac{3\pi}{11} \), follow these steps: ### Understanding Reference Angles A **reference angle** is the acute angle that a given angle makes with the x-axis. Depending on the quadrant in which the original angle lies, the reference angle helps determine the exact angle. ### Quadrant 3 Characteristics - **Quadrant 3** angles are between \( \pi \) and \( \frac{3\pi}{2} \) radians. - In this quadrant, both the sine and cosine values are negative. ### Calculating the Angle in Quadrant 3 To find the actual angle in **Quadrant 3** using the reference angle: \[ \text{Angle in Quadrant 3} = \pi + \text{Reference Angle} \] Plugging in the given reference angle: \[ \text{Angle in Quadrant 3} = \pi + \frac{3\pi}{11} = \frac{11\pi}{11} + \frac{3\pi}{11} = \frac{14\pi}{11} \] ### Final Answer The corresponding angle in **Quadrant 3** is: \[ \boxed{\dfrac{14\pi}{11}} \]

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To find the corresponding angle in Quadrant 3 using the reference angle of \( \frac{3\pi}{11} \), you can use the following formula: the angle in Quadrant 3 is given by \( \pi + \text{reference angle} \). Therefore, the angle is: \[ \pi + \frac{3\pi}{11} = \frac{11\pi}{11} + \frac{3\pi}{11} = \frac{14\pi}{11} \] So, the angle in Quadrant 3 is \( \frac{14\pi}{11} \) radians. To spice things up, did you know that angles can be found in various ways, and not just through reference angles? For example, if you were to explore the unit circle, each quadrant will show you not only the angle but also how the sine and cosine behave! Quadrant 3 is home to negative sine and cosine values, giving you a rich context for understanding trigonometric identities. And if you're diving deeper into radians, consider checking out "Trigonometry for Dummies." This fun guide simplifies concepts and offers a thorough understanding of angles and their applications. It can be both plotted on cases like this and used in real-life scenarios, such as architecture and navigation. Grab a copy and elevate your trigonometric skills!

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